Gotthard allweiler



UNITED STATES PATENT OFFICE.

GOTTHARD ALLlVEILER, OF RADOLFZELL, GERMANY.

AUXILIARY EXHAUST APPARATUS FOR OSCILLATING WING-PUMPS.

SPECIFICATION forming part of Letters Patent No. 564,959, dated August4, 1896.

Application filed July 8, 1895. Serial Nol' 555,319. (No model.)

To (all whom it may concern:

Be it known that I, Gorrnann ALLWEILER, pump manufacturer, a subject ofthe Grand Duke of Baden, residing at Radolfzell in the Grand Duchy ofBaden and German Empire, have invented new and useful Improvements inAuxiliary Exhaust Apparatus for Oscillating ing-Pumps, of which thefollowing is a specification.

My invention relates to oscillating pumps and to means for opening thesuction and force valves thereof for the purpose of draining them.

The class of pumps to which my invention applies is that wherein thepump-cylinder is provided with an oscillating piston or plunger pivotedat the center of the cylinder. The suction and force valves are usuallyarranged in pairs and are pivoted to the inte rior of the cylinder.According to my present invention I raise these valves from their seatsby means of a longitudinally-movable spindle which passes through thecylinder from the outside, the inner end of which acts against the valveto raise it from its seat when the spindle is forced inward.

I illustrate my invention by means of the accompanying drawings, inwhich- Figure 1 is an end view of an oscillating pump having portionscut away to show the interior construction, and Fig. 2 is a view of thecylinder-head. Fig. 3 is a view showing my invention as applied to theupper valves. A represents the cylinder proper; B, one of thecylinder-heads; f and f, the suctionvalves, and c and c are theforce-valves.

The suction-valves are pivoted adjacent to each other on opposite sidesof the center, and they are provided with projections Z and Z, whichextend toward each other, their inner ends being near together. Thesevalves are lifted from their seats when necessary by forcing theseadjacent ends apart, and this I accomplish by means of a pin or spindleh, which extends through the cylinder-head and has on its inner end aconical point k, resting normally between the inner ends of theprojections Z and Z. The spindle is mounted so that it has alongitudinal motion in its bear ing, and when it is forced inward theconical point forces the inner ends of the projections apart and solifts the valves from their seats.

The force-valves are provided with similar inward -extendingprojections, only one of which,m,is shown, and a pin or spindle h actson these valves in the same manner as described for the suction-valves.As long as the spindles are kept in the valves will be held open, andwhen they are withdrawn the valves will come down onto their seats.

I claim- The herein-described oscillating pump having in the interiorthereof a pair of valves oppositely disposed, said valves having offsetsor projections extending toward each other, a longitudinally-movable pinor spindle extending through the casing of the pump and having a conicalor wedge-shaped inner end adapted to be forced between said projectionsto lift said valves from their seats.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

GOTTHARD ALLWEILER.

Witnesses OSCAR MULLER, CHARLES MEYER.

